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After publication of our article [1], we became aware of a typographical error in the Methods section, which concerned
the statement about the p-value of an LRS of 18 or higher in our QTL analysis. Below
is the first part of the corresponding chapter with the corrected p-value (marked
in bold). We apologize for any inconvenience.

QTL Mapping and expression analyses

All probe sets were mapped using standard interval mapping methods at 1 cM intervals
(~2 Mb) along all autosomes and the X chromosome. This procedure generates estimates
of linkage between variation in transcript expression levels and chromosomal location.
The entire set of values can be used to construct a set of QTL maps for all chromosomes
(except Chr Y and the mitochondrial genome) in which position is plotted on the x-axis
and the strength of linkage--the likelihood ratio statistic (LRS) or log of the odds
ratio (LOD)-is plotted on the y-axis. An LRS of 18 or higher is significant at a genome-wide
p-value of < 0.05.